This is a great “getting back into it” session that isn’t meant to be that tough. I still use it today for that reason but I’ve also adapted it to serve a different purpose later in the season, which I describe in more detail here.
The 1-2-3-2-1-2-3-2-1 fartlek is an "introduction to power endurance" workout that can be used early in a training cycle when an athlete is still building fitness but ready to handle more work. The pickups are relatively short—1-3 minutes in duration—and the intensity—10K effort—should manageable for that chunk of time. The "recovery" intervals, which are run at more of a moderate training pace than a slow jog, are equal in duration to the work interval that preceded it. I like to use a version of this workout every few weeks during a half-marathon or marathon buildup because it forces the athlete to stay engaged the entire time and serves as a nice substitute for a standard threshold session.
Not every workout will leave you hunched over with your hands on your knees afterward—in fact, most of them shouldn’t—but every once in a while you just need to go out and make yourself as uncomfortable as possible.
Looking for a challenging but not-too-hard workout to knock out before your next race? Look no further than the 5-4-3-2-1 halftime fartlek. It starts fast and finishes even faster but it will be over before it really starts to grind your gears down.
My favorite workouts are pretty universal in nature, meaning you can go to them whether you're focusing on something as short as a 5K or as long as a marathon. The 3-2-1 Mile Cutdown session fits that bill.
There’s a lot of confusion around the tempo run but stripped down to its core, this workout simply boils down to maintaining a steady effort for a prolonged period of time. And while the definitions of steady and prolonged can vary depending on a variety of factors, for the sake of simplicity and ease of creating a common understanding, let’s call the “classic” tempo run 5 miles at half-marathon pace. This is a pretty standard workout you’ll see utilized by a wide range of athletes and coaches to build aerobic strength, improve efficiency, and/or practice running race pace. The 5-n-Go Tempo adds a slight twist to the classic tempo run by squeezing down the pace for a mile or two at the end.
Yasso 800s are perhaps the most well-known speed workout amongst dedicated marathoners of all levels. The premise is pretty straightforward: If your goal is to run a marathon in, say, 3 hours flat, you should be able to do ten 800m repeats in 3:00 with a 400m jog for recovery between reps. A 2:45 marathoner would run their reps in 2:45, and so on and so forth.